CN106416141B - System and method for for the dynamic allocation of resources on authorization frequency spectrum and unlicensed spectrum - Google Patents
System and method for for the dynamic allocation of resources on authorization frequency spectrum and unlicensed spectrum Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/263—Rate modification at the source after receiving feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
- H04L5/0041—Frequency-non-contiguous
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/09—Management thereof
- H04W28/0958—Management thereof based on metrics or performance parameters
- H04W28/0967—Quality of Service [QoS] parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/12—Flow control between communication endpoints using signalling between network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0866—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a dedicated channel for access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/082—Load balancing or load distribution among bearers or channels
Abstract
Transmission rate of the traffic flow respectively in dominant frequency band part and supplement band portion is dynamically changed, this may make launch point to meet the requirement of the service quality (QoS) on uniformly eating dishes without rice or wine.The qos requirement may be designated as, the traffic flow it is described uniformly eat dishes without rice or wine on overall transmission rate be more than threshold value.Transmission rate can be changed based on the competitive level of the supplement frequency band.For example, the transmission rate in the main band can be promoted during height competition to compensate lower effective transmission speed on the supplement frequency band.Similarly, during low competition, the transmission rate in the main band can be reduced to offset higher effective transmission speed on the supplement frequency band.
Description
Cross-reference to related applications
Patent application claims were submitted on May 16th, 2014, entitled " for integrated authorization-unauthorized QoS driving
It 61/994, No. 734 U.S. Provisional Applications of the System and method for of frequency spectrum access " and submits on March 26th, 2015, title
No. 14/670,215 U.S. for " System and method for for the dynamic allocation of resources in authorization and unlicensed spectrum " is non-provisional
The equity of application, their full content are incorporated herein by reference.
Technical field
The present invention relates generally to resources in network distribution management, in a particular embodiment, be related to for authorization and it is non-
Authorize the technology and mechanism of the System and method for of dynamic allocation of resources on frequency spectrum.
Background technique
Government organs reserve the frequency band of some wireless frequency spectrums for different purposes.For example, Federal Communications Committee (FCC),
Certain parts that International Telecommunication Union (ITU) and other regulatory agencies reserve frequency spectrum are used for authorization activities (for example, broadcast, electricity
Depending on, satellite, mobile communication etc.), while the other parts of reserved frequency spectrum are used for unauthorized activity.Authorization frequency spectrum may be limited by
The regulation that regulatory agency is proposed, and it is limited by the operation that public and/or privately owned entity is decided through consultation involved in authorization activities
Agreement.The regulation that corresponding regulatory agency is proposed may also can be limited by by keeping for the frequency spectrum of unauthorized communication, more particularly to
Transimission power and share and access.
Summary of the invention
Technological merit generally realizes which depict in authorization and unlicensed spectrum by embodiment of the disclosure
The System and method for of dynamic allocation of resources.
According to an embodiment, a method of it is transmitted for promoting across the signal of authorization and unlicensed band.Show at this
In example, which comprises identify the traffic flow for upper transmission of uniformly eating dishes without rice or wine.The traffic flow is in the dominant frequency for licensing to cellular communication
It is transmitted on band part and the supplement band portion for keeping for unauthorized communication.The method also includes promoting launch point dynamically to change
Become transmission rate of the traffic flow respectively in the dominant frequency band part and the supplement band portion, so that described unified empty
The overall quality of service (QoS) of the traffic flow requires to be satisfied on mouth.It additionally provides a kind of for executing the dress of this method
It sets.
According to another embodiment, a kind of method for sending the signal across authorization and unlicensed band is provided.At this
In example, which comprises establish between launch point and one or more receiving points and uniformly eat dishes without rice or wine.It is described uniformly to eat dishes without rice or wine to fit
In transmitting wireless signal in the main band that licenses to cellular communication and the supplement frequency band for keeping for unauthorized communication.The method
It further include uniformly eating dishes without rice or wine upper to execute wireless transmission described.The wireless transmission is in the dominant frequency band part and the supplement frequency band
Traffic flow is transmitted on part.The method also includes dynamically changing the traffic flow respectively in the dominant frequency band part and described
The transmission rate on band portion is supplemented, so that the overall quality of service (QoS) of the upper traffic flow of uniformly eating dishes without rice or wine requires
It is satisfied.Additionally provide a kind of apparatus for carrying out the method.
According to yet another embodiment, it provides a kind of for dynamically adjusting the side of the signal across authorization and unlicensed band
Method.In this example, which comprises establish between launch point and one or more receiving points and uniformly eat dishes without rice or wine.The system
One eats dishes without rice or wine for transmitting wireless signal in the main band for licensing to cellular communication and the supplement frequency band for keeping for unauthorized communication.
The method also includes uniformly eating dishes without rice or wine upper to execute wireless transmission described.The wireless transmission is in the dominant frequency band part and described
Traffic flow is transmitted on supplement band portion.The method also includes being required and the supplement according to the service quality (QoS) of flow
One of both of channel status of frequency band or both, which is dynamically changed, transmits the traffic flow on the supplement frequency band
Stock number.Additionally provide a kind of apparatus for carrying out the method.
According to yet another embodiment, a kind of method for receiving the signal across authorization and unlicensed band is provided.At this
In example, which comprises establish between launch point and one or more receiving points and uniformly eat dishes without rice or wine.It is described uniformly to eat dishes without rice or wine to use
In transmitting wireless signal in the main band that licenses to cellular communication and the supplement frequency band for keeping for unauthorized communication.The method
It further include in the upper reception traffic flow of uniformly eating dishes without rice or wine.The traffic flow is at least in the dominant frequency band part and the supplement frequency band
It is transmitted on part.For transmitting the stock number of the traffic flow according to the service quality (QoS) of flow on the supplement frequency band
It is required that being dynamically changed with one of both of the channel status of the supplement frequency band or both.It additionally provides a kind of for holding
The device of row this method.
Detailed description of the invention
For a more complete understanding of the present invention and its advantages, it is described below now in conjunction with Figure of description reference, in which:
Fig. 1 shows cordless communication network embodiment schematic diagram；
Fig. 2 shows in the adaptable nothing for eating dishes without rice or wine upper transmission across main portions of the spectrum and supplement portions of the spectrum
The wireless network embodiment schematic diagram of line transmission；
Fig. 3 shows the embodiment of the method process for dynamically changing transmission rate in main band and supplement frequency band
Figure；
Fig. 4 shows the embodiment of the method for dynamically changing the amount of frequency spectrum that wireless transmission is crossed in supplement frequency band
Flow chart；
Fig. 5 shows the frequency spectrum that the leap on supplement frequency band is adjusted by change and code rate to dynamically adjust QoS
The another method embodiment flow chart of measurement；
Fig. 6 is shown for providing the QoS- network architecture embodiment schematic diagram for driving integrated frequency spectrum access；
Fig. 7 shows the embodiment signal of uniformly eating dishes without rice or wine being used to support across the wireless transmission of main band and supplement frequency band
Figure；
Fig. 8 shows the algorithm embodiment block diagram for determining the percentage that flow is unloaded to spread-spectrum thereon；
Fig. 9 shows frame structure embodiment schematic diagram；
Figure 10 shows computing platform embodiment schematic diagram；And
Figure 11 shows communications device embodiments schematic diagram.
Unless otherwise indicated, the respective digital in different attached drawings and symbol generally refer to corresponding component.Attached drawing is carried out
It draws with the related fields of clear each embodiment of explanation, and is drawn not necessarily to scale.
Specific embodiment
Below to the formation of the embodiment of the present invention and using being discussed in detail.It will be appreciated, however, that disclosed herein
Concept can be embodied in various specific backgrounds, and specific embodiment discussed herein is only schematical, not
For limiting the scope of the claims.Furthermore, it is to be understood that do not depart from spirit of the invention as defined in the appended claims and
Under the premise of range, various changes, substitutions and modifications can be made herein.
Many home control network communication protocols such as senior long term evolution (LTE) (LTE-A) agreement are only licensing to cellular communication
Frequency band in run, " main band " is referred to as in the disclosure.Other home control network communication protocols such as Wi-Fi agreement are only unauthorized
It is run in frequency band, " supplement frequency band " is known as in the disclosure.Term " authorized frequency bands " can be used interchangeably with term " main band ", art
Language " unlicensed band " can be used interchangeably with term " supplement frequency band ".It should be noted that the frequency band for licensing to cellular transmission can not
When change, term " main band " can refer to license to the frequency band of cellular transmission again after the application submits.Supplementing frequency band can be with
Frequency spectrum including keeping for non-telecom purposes, such as industry, science and medical (ISM) frequency band.The telecom agreement run in main band
More reliable data transmission is usually provided, and supplementing the telecom agreement run on frequency band usually can support low latency high capacity to pass
It is defeated, although reliability reduces.
One kind is described in U.S. Patent application 14/669,333 (attorney docket HW 91017895US02) to be used for transmission
Wireless transmission across dominant frequency band part and supplement band portion is uniformly eated dishes without rice or wine, this Shen is hereby incorporated by reference in entire contents
Please in.The various aspects of the disclosure are provided for dynamically changing traffic flow respectively in dominant frequency band part and supplement band portion
Transmission rate so that the service quality (QoS) for upper traffic flow of uniformly eating dishes without rice or wine requires the technology that is satisfied.In some embodiments
In, when the accumulation transmission rate for upper traffic flow of uniformly eating dishes without rice or wine is more than threshold value, qos requirement is satisfied.The accumulation sends speed
Rate is total/overall transmission rate on uniformly eating dishes without rice or wine comprising the transmission speed in transmission rate and supplement frequency band in main band
The sum of rate.For example, the incrementss of the transmission rate on a frequency band can with the reduction amount of the transmission rate on another frequency band at
Direct ratio.In some embodiments, transmission rate can be changed based on the competitive level for supplementing frequency band.For example, in the high competition phase
Between, the transmission rate in main band can be promoted to compensate lower effective transmission speed on supplement frequency band.Similarly, low competing
During striving, the transmission rate in main band can be reduced to offset higher effective transmission speed on supplement frequency band.Promotion/reduction
In main band a kind of method of transmission rate be dispatched to traffic flow it is more or fewer based on assignment (grant-based)/
The resource of scheduling.In other embodiments, transmission rate can be changed based on the Resource Availability in main band.In some realities
It applies in example, the amount of frequency spectrum that transmission rate can be crossed in supplement frequency band, main band or both by changing wireless transmission
Change.For example, the amount of frequency spectrum that supplement frequency band is crossed over can attempt to connect using competition-based by increasing or decreasing launch point
Enter the quantity of (grant-less) resource without assignment in the supplement frequency band that scheme is accessed and changes.As another example, main
The amount of frequency spectrum that frequency band is crossed over can be changed and increasing or decreasing the quantity for distributing to the scheduling resource of launch point or receiving point
Become.In some embodiments, the amount for changing the frequency spectrum being spanned can make launch point in the case where not influencing another frequency band
Message transmission rate in increase/reduction frequency band.These and other aspects will be described in more detail below.
As used herein, term " uniformly eating dishes without rice or wine " refers to sharing public physics and media access control (MAC)
Eating dishes without rice or wine for connection, can be consistent with the interface run according to common wireless access technology (RAT), such as the 5th generation (5G) LTE
Cellular radio access network (RAN) in system.In some embodiments, it uniformly eats dishes without rice or wine to include that at least two spectrum types rely on
Type (spectrum-type dependent) eats dishes without rice or wine to configure, and the main band including one for licensing to cellular communication is eated dishes without rice or wine
Configuration and one are for keeping for the supplement frequency band of unauthorized communication to eat dishes without rice or wine to configure.
Fig. 1 shows the network 100 for transmitting data.The network 100 includes the base station with overlay area 101
110, multiple mobile devices 120 and backhaul network 130.As shown, base station 110 and mobile device 120 establish uplink
The connection of (dash line) and/or downlink (chain-dotted line), for carrying the data that slave mobile device 120 arrives base station 110, it is on the contrary also
So.The data carried in uplink/downlink connection may include the data transmitted between mobile device 120, Yi Jitong
Cross the data that backhaul network 130 sent/be delivered from distal end (not shown) to.As used herein, term " base station " refers to
Any component (or assembly set) for network offer wireless access, such as enhanced base station (eNB), macrocell, millimicro
Microcell (femtocell), Wi-Fi access point (AP) or other wireless-enabled devices.It base station can be according to one or more nothings
Line communication protocol provides wireless access, for example, long term evolution (LTE), advanced LTE (LTE-A), high-speed packet access (HSPA),
Wi-Fi802.11a/b/g/n/ac etc..As used herein, term " mobile device " refers to and any can establish with base station
The component (or assembly set) of wireless connection, such as user equipment (UE), movement station (STA) and other wireless-enabled devices.?
In some embodiments, network 100 may include the various other wireless devices such as relay, low power nodes.
As discussed in U.S. Patent application 14/669,333 (attorney docket HW 91017895US02), Ke Yi
It establishes between launch point and receiving point and uniformly eats dishes without rice or wine, support across main portions of the spectrum and supplement the wireless transmission of portions of the spectrum.
Fig. 2 shows the wireless networks 200 of the wireless transmission for being passed across main portions of the spectrum and supplement portions of the spectrum to implement to illustrate
It is intended to.As shown, wireless network 200 includes launch point 210, receiving point 230 and scheduler 270.Launch point 210, which can be, appoints
What is suitable for emitting the equipment of wireless transmission, and receiving point 230 can be any suitable for receiving the wireless signal sent by launch point 210
Equipment.For example, launch point 210 can be base station, relay station or movement station.Similarly, receiving point 230 be also possible to base station,
Relay station or movement station.
213 foundation uniformly eat dishes without rice or wine between launch point 210 and receiving point 230, and is suitable for carrying and at least crosses over main band
The wireless transmission 290 of part and supplement band portion.Wireless transmission 290 can be any kind of wireless signal.For example, wireless
Transmission 290 can be down link signal, uplink signal, the signal of device-to-device, wireless backhaul link (for example, phase
Between adjacent base station, etc.) on the signal transmitted or any other wireless signal transmitted between launch point and receiving point.
Wireless transmission 290 can also have the characteristics that different transformats/.For example, wireless transmission 290 can be unicast transmission, multicast transmission
Or broadcast transmission.As another example, wireless transmission may include from individual antenna or from mutiple antennas transmit single layer signaling and/
Or multilayer signaling, for example, single user (SU) multiple-input and multiple-output (MIMO) transmission, multi-user MIMO transmissions etc..
In some embodiments, supplement frequency band can be used and carry out transmission services, reaching supplement frequency band can satisfy statistics QoS about
The degree of beam, and other flow is discharged into main band.For example, transmitter 210 can monitor the service quality of traffic flow transmission
(QoS) whether performance metric is met to determine that statistics QoS is constrained, or is expected to be met.If QoS performance metric is down to
(for example, the grouping for meeting qos requirement is very little so that being unable to satisfy statistics QoS constraint) below lower threshold, then transmitter 210 can
Part (or whole) traffic flow is switched to main band from supplement frequency band.On the contrary, if QoS performance metric be elevated above it is higher
Threshold value (for example, the grouping for meeting qos requirement is substantially more than required for satisfaction statistics QoS constraint), then transmitter 210 can incite somebody to action
Partially (or all) traffic flow is switched to supplement frequency band from main band.
All aspects of this disclosure provide for when meeting switching standards dynamically by flow from main band to supplement frequency band
The method of switching.Fig. 3 is shown for dynamically changing main band and supplementing the method 300 of the transmission rate on frequency band, can be by
Launch point executes.As shown, method 300 starts from step 310, wherein launch point is established uniformly eats dishes without rice or wine with receiving point.
Then, method 300 carry out step 320, wherein launch point uniformly eat dishes without rice or wine it is upper execute wireless transmission, in dominant frequency band part and benefit
It fills and transmits traffic flow on band portion.Hereafter, method 300 carries out step 330, and wherein launch point dynamically changes traffic flow difference
Transmission rate in main band and supplement frequency band, to keep the overall transmission rate of traffic flow to be higher than minimum threshold.Some
In embodiment, scheduler can promote launch point to execute one or more of these steps.
All aspects of this disclosure also provide for dynamically changed when meeting switching standards wireless transmission supplement frequency band,
The method for the amount of frequency spectrum crossed in main band or both.More specifically, launch point can incite somebody to action in main band and supplement frequency band
The data of wireless transmission carrying are multiplexed.Then, when meeting standard, launch point is dynamically adjusted (for example, broadening or contracting
It is narrow) amount of frequency spectrum crossed in one or two frequency band.Launch point can adjust the frequency spectrum crossed in two frequency bands simultaneously.Phase
Instead, launch point can adjust the frequency spectrum crossed in a frequency band, without adjusting the frequency spectrum crossed in another frequency band.
In some embodiments, the frequency spectrum on one frequency band of broadening/constriction makes without adjusting the frequency spectrum on another frequency band
Launch point has adjusted overall transmission rate in the case where not changing the transmission characteristic on non-adjustment frequency band.For example, launch point can
The amount of frequency spectrum crossed in broadening/constriction main band, the transmission characteristic without changing supplement frequency band.This aloows launch point
The transmission rate in main band is increased or reduced, without influencing the activity on supplement frequency band, for example, not increasing on supplement frequency band
Contention etc..Similarly, launch point can widen/constriction supplement frequency band in the amount of frequency spectrum crossed over, without changing main band
Transmission characteristic.This can enable launch points can increase or decrease the transmission rate on supplement frequency band, without influencing in main band
Activity, for example, without redistributing resource, etc. to/from other users.
Fig. 4 shows the amount of frequency spectrum crossed in supplement frequency band and/or main band for dynamically changing wireless transmission
Method 400.As shown, method 400 starts from step 410, wherein launch point is established uniformly eats dishes without rice or wine with receiving point.It connects
, method 400 carry out step 420, wherein launch point uniformly eat dishes without rice or wine it is upper executes wireless transmission, across main band and supplement frequently
Band.Hereafter, method 400 carries out step 430, wherein when meeting switching standards, launch point dynamically changes wireless transmission and mending
Fill the amount of frequency spectrum crossed in frequency band and/or main band.
In other embodiments, the frequency spectrum on one frequency band of broadening/constriction makes without adjusting the frequency spectrum on another frequency band
Launch point can adjust the code rate on adjusted frequency band, the transmission rate on frequency band without changing adjustment, and not
Influence the activity on non-adjustment frequency band.Changing code rate in this way aloows launch point to control parity information
With the ratio of the information bit transmitted on the frequency band of adjustment, so that launch point effectively be enable to control the QoS of traffic flow
Measurement, without influencing the activity on non-adjustment frequency band.For example, launch point can pass through the frequency spectrum widened in frequency band and raising
Code rate in frequency band improves main band or supplements the packet loss on frequency band.As another example, launch point can be with
It is improved on main band or supplement frequency band by the frequency spectrum in constriction frequency band and the code rate in reduction frequency band
Spectrum efficiency.
Fig. 5 shows by changing the frequency spectrum crossed on supplement frequency band and code rate and dynamically adjusts QoS metric
Method 500.As shown, method 500 starts from step 510, wherein launch point is established uniformly eats dishes without rice or wine with receiving point.Then,
Method 500 carries out step 520, and wherein launch point sends across dominant frequency band part and supplement the stream in the wireless transmission of band portion
Amount stream.
Then, method 500 carries out step 530-540, wherein the QoS metric of launch point monitoring traffic flow, and judges institute
QoS metric is stated whether within tolerance interval.The tolerance interval may rely on the statistics QoS constraint of traffic flow.If
QoS metric is within tolerance interval, 500 return step 530-540 of method, repeat these steps until QoS metric is fallen on can
Receive except range or traffic flow is transmitted.
If QoS metric, except tolerance interval, method 500 carries out step 550, and wherein launch point judges that QoS metric is
It is no too low or too high.When the grouping ratio for meeting qos requirement is small than meeting needed for counting qos requirement, QoS metric may
It is too low.When meeting the grouping ratio of qos requirement than meeting big more needed for counting qos requirement, QoS metric may be too
Height, for example, traffic flow transmission is being more than statistics qos requirement.
If QoS metric is too low, method 500 carries out step 560-570, and wherein launch point increases what supplement frequency band was crossed over
Code rate in amount of frequency spectrum and supplement frequency band.On the contrary, method 500 carries out step 580-590 if QoS metric is too high,
Wherein launch point reduces the code rate in the amount of frequency spectrum and supplement frequency band that supplement frequency band is crossed over.Hereafter, method 500 returns to step
Rapid 530-540 repeats these steps until QoS metric is fallen in except tolerance interval or traffic flow is transmitted.It can adopt
The frequency spectrum and/or code rate in main band are adjusted with similar process.In some embodiments, one or two is being adjusted
After the frequency spectrum crossed in frequency band, code rate and transmission rate can be changed.
In some embodiments, flow stream can be multiplexed in main band and supplement frequency band.In this embodiment
In, it can be constrained based on the QoS of flow and the flow of different proportion is respectively allocated to main band and supplement frequency band.Fig. 6 is shown
It is adapted to provide for the network architecture embodiment of the integrated frequency spectrum access of QoS- driving.In this example, the first UE (UE1) has first
Group statistics QoS constraint (γ 1, δ 1, ε 1), and the 2nd UE (UE2) has second group for being different from first group of statistics QoS constraint
Statistics QoS constrain (γ 2, δ 2, ε 2).As shown, flow associated with the first UE is composed and is supplemented on frequency spectrum again in dominant frequency
With, and flow associated with the 2nd UE only transmits on supplement frequency spectrum.The unauthorized resource of obstruction can indicate the first UE or the
Conflicting between the transmission of two UE and the transmission of other equipment for attempting to access the supplement unauthorized resource of frequency band.
In some embodiments, wireless network can create spectrum pool (authorization and unauthorized), and according to network
Capacity and reliability route flow by these ponds.It can be using according to estimated in the characteristic and each frequency band of frequency band
The selected different wave of flow come send authorization and unauthorized pond in flow.
Routing may be completed along with this understanding, that is, and the reliability of unlicensed spectrum is likely lower than authorization frequency spectrum,
For example, being interfered due to the presence of other users and/or as caused by the equipment such as micro-wave oven.
All aspects of this disclosure provide a mean for uniformly eat dishes without rice or wine (AI), for example next-generation or the 5th generation eats dishes without rice or wine, execute across
More authorize the System and method for the wireless transmission of unlicensed spectrum band.Entire system capacity can be improved in all aspects of this disclosure,
Also meet application specific service quality (QoS) requirement simultaneously.Wireless network is extended to unauthorized frequency by all aspects of this disclosure
Spectrum, to improve network capacity.All aspects of this disclosure provide the switching at runtime technology between authorization and unlicensed spectrum；Flexibly
Across frequency spectrum load balancing；Authorize the minimum interference on frequency spectrum；And the reduction of the demand to authorization frequency spectrum.Authorize frequency spectrum
Referred to as main band and/or core band/frequency spectrum can be used for the flow of high priority and the flow with certainty qos requirement.Its
It can be used as and fall frequency spectrum (for example, on an as-needed basis) after rise for the flow with statistics qos requirement.Unlicensed spectrum is also referred to as
It for supplement frequency band and/or non-core frequency band/frequency spectrum, can be used for flow unloading, and in some embodiments, can be used for as possible
And it is (best-effort) flow and the flow with statistics qos requirement.
Fig. 7 shows the embodiment of uniformly eating dishes without rice or wine for being used to support the wireless transmission across main band and supplement frequency band.Dominant frequency
Band can be used for the flow of higher priority, such as control signaling, emergency service, safety, network insertion, broadcast, synchronizing channel
With the flow with certainty qos requirement.Unlicensed spectrum can in time be used for flow unloading purpose, and for doing one's best
(delay allowance) flow (for example, the contents such as film, picture and music are downloaded) and the flow with statistics qos requirement.
Network element can dynamically switch over flow between main band and supplement frequency band, to meet discharge pattern and/or answer
With specific qos requirement.This provides Load-aware spread spectrum/contraction.
In one embodiment, supplement frequency spectrum is used for various tasks, such as the load shedding flow from main band, and
Need-based adaptive spectrum extension-contraction for Load-aware.It should be noted that because different frequency bands, institute is used
It can be used for main band and supplement frequency band with different eat dishes without rice or wine (AI).Alternatively, can using it is identical eat dishes without rice or wine carry across
The more transmission of main band and supplement frequency band.In one embodiment, spectrum type dependent form SoftAI it is (soft to eat dishes without rice or wine) for main band and
Supplement frequency band provides different configured transmissions (for example, physical layer (PHY) designs).This may be in view of different waveform, no
Same access scheme, frame structure, channelizing etc..It, can be using based on virtual resource in view of launch point (TP) cooperation and UE cooperation
Combine joint radio resource management (RRM) scheme of (virtual resource association, V-RA) to determine to non-
Authorize the demand of frequency spectrum.Can add for authorizing frequency spectrum to fall KPI Key Performance Indicator (KPI) monitoring mechanism of operation after rise ensures
Qos requirement is met.
Fig. 8 shows the algorithm embodiment block diagram for determining the percentage that flow is unloaded to spread-spectrum thereon.
For the sake of fairness, the percentage of the supplement frequency band for authorizing flow to unload can be flexibly and dynamically adjusted, example
Such as, in order to based on channel status in average traffic load, authorization and the unlicensed spectrum in such as unlicensed band and all
Such as minimum-rate, delay sensitivity, priority authorization flow qos requirement and the factors such as other reduce to other symbiotic systems
It influences.
The unused portion that can be in time used for the unlicensed spectrum of flow unloading can be identified using spectrum-sensing.
OFDM is most common multicarrier waveform, it is well known that secondary lobe is influenced outside its higher band by its power spectral density.This
Adjacent channel interference problem may be caused to symbiotic system and is needed using guard band.Alternatively, the dynamic of frequency band is supplemented
State access may be needed using the expansible baseband waveform comprising more multiple spectra.
The out-of-band emission of OFDM can be reduced using filtering.With for specific frequency segment and dynamic design it is adaptive
Filtering-the OFDM (F-OFDM) of filter, which can be, has higher frequency spectrum for the discontinuous segment of dynamic access unlicensed spectrum
The expansible waveform of efficiency.
OFDM/OQAM is a kind of filter bank multi-carrier (FBMC) waveform, includes more frequency spectrum (nothings than OFDM waveform
Need guard band or cyclic prefix), and more spirits are also provided in the dynamic spectrums shared environment such as unlicensed spectrum
Activity, and using higher complexity and retardance as cost, better performance can be provided than F-OFDM.
All aspects of this disclosure provide a kind of spectrum type dependent form multicarrier system, and combining makes in main band
Pass through the multicarrier waveform of verifying with OFDM etc. and/or uses F-OFDM or FBMC waveform etc. more in supplement frequency band
It is suitable for the waveform of dynamic spectrum shared environment.
Frequency spectrum access in the unlicensed band that may need to extend is before some regions abide by some rules, such as dialogue
Monitor (LBT) rule.Self-adaptation flexible frame structure in supplement frequency band is suitable for the supervision such as LBT mechanism limitation, and considers
The transmission of measurement and synchronizing channel.In one embodiment, Fig. 9 shows the frame structure in unlicensed spectrum, wherein uncontested connect
Entering can be adjusted with the duration of access competition-based according to periodic channel sensing result.
Can be in main band using the access based on authorization of scheduling, it can be on supplement frequency band using competition-based
Access.It may make on supplement frequency band using access competition-based and share frequency spectrum with symbiotic system.It in one embodiment, can be with
Limit two competitive levels.First is to compete between wireless access technology (RAT), and second is competition in RAT.Between RAT
In competition, competition is between (for example, between 5G RAT and other RATs) different radio access technologies using supplement frequency band.
In RAT in competition, competition is between similar technology entities (for example, the 5G network entity with flow of doing one's best).
In one embodiment, supplement frequency band is effectively utilized using the MAC protocol specially designed and deals carefully with supplement
Two contention levels on frequency band.Certain form of LBT random access procedure can be considered in this, and central entity can determine 5G
Whether RAT should use supplement frequency band based on the average traffic load in unlicensed spectrum.It is lightly loaded when sensing unlicensed band
When, central entity increases the probability of 5G RAT access unlicensed spectrum with being adapted to, and vice versa.This central entity can be with
It is competed using access scheduling or competition-based to manage in RAT.
Which UE can be selected to use according to application scenarios, discharge pattern, QoS and safety requirements using Centralized Controller
Which frequency spectrum.Alternatively, it is possible to UE push rule and condition so that UE is able to participate in decision process.
In an exemplary scene, such as voice, operator specific services or high safety can be sent on authorization frequency spectrum
The high QoS datas such as property Deta bearer are to ensure that qos requirement is satisfied.Meanwhile it can (and reliability be lower unauthorized
) elastomeric flow amount is transmitted on frequency spectrum, for example, doing one's best and delay-tolerant Deta bearer.Centralized Controller can continuously or
The QoS provided in unlicensed band is periodically provided, also, whenever it not can guarantee desired QoS just by some UE and
Switch back into flow dynamics authorization frequency spectrum.Falling mechanism can be used to ensure whenever qos requirement cannot be in unlicensed spectrum
When meeting, authorization frequency spectrum is just fallen back to.
Assuming that UEiWith periodic traffic, which has by three parameter (γi, δi, εi) QoS that embodies is special
Sign, wherein γ is packet arrival rate, and δ is maximum admissible shake (two departure times being continuously grouped and two continuous groupings
Arrival time difference), ε be shake violate acceptable probability.
For the UE with certainty QoS guarantee, εiEqual to zero.It is stayed because in this case, not violated for shake
There is leeway, the specified UE with certainty QoS of Centralized Controller uses authorization frequency spectrum at this time.In order to realize the effective of frequency spectrum resource
It utilizes, Centralized Controller may give unlicensed spectrum resource allocation to the UE with statistics qos requirement.Unlicensed spectrum may not
It is too reliable, therefore its resource is characterized by specific blocking rate q.Centralized Controller can monitor the average obstruction in unlicensed spectrum
Rate, as long as and QoS within acceptable level, for example, q < εi, so that it may it is specified with statistics QoS's based on these characteristics
UE uses unlicensed spectrum.
It will be understood by those skilled in the art that existing solution is not provided with such a solution, that is, consider
A kind of integrated frequency spectrum access method using effective use authorization and unlicensed spectrum band of uniformly eating dishes without rice or wine, and make total system simultaneously
Maximum capacity, and ensure that the QoS for different flow type (for example, elasticity and inelastic traffic) is constrained and met.On
The scheme for stating discussion, which can use, applies specific QoS characteristic wireless to enhance 5G to effectively utilize authorization and unlicensed spectrum
Access the performance of network.
Figure 10 shows the block diagram that can be used for realizing the processing system of apparatus and method for disclosed herein.Particular device can
With using all components shown or only component subset, for distinct device, integrated level may change.In addition, setting
Standby may include multiple examples, such as multiple processing units, processor, memory, transmitter, receiver of component etc..Processing system
System may include equipped with loudspeaker, microphone, mouse, touch screen, keypad, keyboard, printer, display etc. one
Or the processing unit of multiple input-output apparatus.Processing unit may include the central processing unit (CPU) for being connected to bus, deposit
Reservoir, mass-memory unit, video adapter, I/O interface.
Bus can be the one or more of any kind of multiple bus structures, including memory bus or memory control
Device processed, peripheral bus, video bus etc..CPU may include any kind of data into electronic data processing.Memory may include appointing
The system storage of what type, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronization
DRAM (SDRAM), read-only memory (ROM), and combinations thereof etc..In one embodiment, memory may include on startup
The ROM used, and the DRAM stored for program and data used when execution program.
Mass-memory unit may include for storing data, program and other information and make these data, program
Pass through the addressable any kind of storage equipment of bus with other information.Mass-memory unit may include, for example, solid-state
One of driver, hard disk drive, disc driver, CD drive or the like are a variety of.
Video adapter and I/O interface provide the interface for coupling external input and output equipment with processing unit.Such as figure
It is shown, the example of input and output device include the display coupled with video adapter and the mouse coupled with I/O interface/
Keyboard/printer.Other equipment can be coupled with processing unit, and additional or fewer interface card can be used.For example,
The serial line interfaces such as universal serial bus (USB) (not shown) can be used to provide interface for printer.
Processing unit further includes one or more network interfaces, may include wire link, such as Ethernet cable etc.,
And/or Radio Link is with accessed node or heterogeneous networks.Network interface allows processing unit to carry out by network and remote unit
Communication.For example, network interface can pass through one or more transmitter/transmitting antennas and one or more receiver/receptions
Antenna provides wireless communication.In one embodiment, processing unit is coupled with local area network or wide area network to carry out data processing simultaneously
It is communicated with remote equipment, such as other processing units, internet, remote storage device etc..
Figure 11 shows the embodiment block diagram of communication equipment 1100, can be equal to one or more discussed above and set
Standby (for example, UE, NB etc.).Communication equipment 1100 may include processor 1104, memory 1106 and multiple interfaces 1110,
1112,1114, can (or can not) be arranged to as shown in figure 11.Processor 1104, which can be, any is able to carry out calculating
And/or the component of other processing inter-related tasks, it can be that processor 1104 stores program and/or refers to that memory 1106, which can be any,
The component of order.Interface 1110,1112,1114 can be any portion for allowing communication equipment 1100 to be communicated using cellular signal
Part or component set, and can be used for that information is received and/or sent in the cellular connection of cellular network.
Although specification is described in detail, but it is to be understood that limited not departing from appended claims
The disclosure spirit or scope under the premise of, various change, replacement and change can be carried out.In addition, the scope of the present disclosure is simultaneously
It is not limited to specific embodiment described herein, because those of ordinary skill in the art can easily recognize from the disclosure
To existing or to be developed various processes, machine, manufacture, material composition, device, method or step at present, can execute with
The substantially the same function of corresponding embodiment disclosed herein realizes substantially the same result.Therefore, appended right is wanted
It asks and is intended within its scope include these processes, machine, manufacture, material composition, device, method or step.
Claims (21)
1. a kind of method for promoting to transmit across the signal of authorization and unlicensed band, which comprises
Scheduler identifies the traffic flow for upper transmission of uniformly eating dishes without rice or wine, wherein the traffic flow is in the main band for licensing to cellular communication
It is transmitted on part and the supplement band portion for keeping for unauthorized communication；And
Launch point is promoted to dynamically change the traffic flow respectively in the dominant frequency band part and the supplement band portion
Transmission rate, so that the overall quality of service qos requirement of the upper traffic flow of uniformly eating dishes without rice or wine is satisfied；
Wherein, described that launch point is promoted to dynamically change the traffic flow respectively in the dominant frequency band part and the supplement frequency band
Transmission rate on part includes:
When the effective transmission speed on the supplement frequency band drops below lower threshold, Xiang Suoshu traffic flow distributes additional
The scheduling resource of the main band.
2. described that launch point is promoted to dynamically change the traffic flow respectively in institute according to the method described in claim 1, wherein
The transmission rate in dominant frequency band part and the supplement band portion is stated, so that overall qos requirement is satisfied, further includes:
The launch point is promoted to dynamically change the traffic flow respectively in the dominant frequency band part and the supplement band portion
On transmission rate so that the traffic flow the main band and it is described supplement frequency band on accumulation transmission rate be kept above
Minimum threshold.
3. described that launch point is promoted to dynamically change the traffic flow respectively in institute according to the method described in claim 1, wherein
State the transmission rate in dominant frequency band part and the supplement band portion further include:
When the effective transmission speed on the supplement frequency band is more than higher thresholds, Xiang Suoshu traffic flow distributes the less master
The scheduling resource of frequency band.
4. described that launch point is promoted to dynamically change the traffic flow respectively in institute according to the method described in claim 1, wherein
State the transmission rate in dominant frequency band part and the supplement band portion, further includes:
The first rate for promoting traffic flow described in the launch point changing section to send in the main band；And
Promote second rate that sends on the supplement frequency band of traffic flow described in the launch point changing section, wherein described the
The knots modification of two rates and the knots modification of the first rate are inversely proportional.
5. described that launch point is promoted to dynamically change the traffic flow respectively in institute according to the method described in claim 1, wherein
State the transmission rate in dominant frequency band part and the supplement band portion, further includes:
When meeting switching standards, promote the launch point dynamically by the part traffic flow from the main band to the benefit
Frequency band switching is filled, or vice versa.
6. according to the method described in claim 5, wherein, when the competitive level in the unauthorized resource of the supplement frequency band is more than
Higher thresholds or be lower than lower threshold when, meet the switching standards, wherein the competitive level includes wireless access technology RAT
Between competition and RAT in competition.
7. according to the method described in claim 5, wherein, when the availability for dispatching resource in the main band is more than higher thresholds
Or when being lower than lower threshold, meet the switching standards.
8. a kind of scheduler, comprising:
Processor；With
Non-transitorycomputer readable storage medium, stores the program that is executed by the processor, described program include to
Realize the instruction of the movement into any one of 7 the methods according to claim 1.
9. a kind of method for sending the signal across authorization and unlicensed band, which comprises
It establishes between launch point and one or more receiving point and uniformly eats dishes without rice or wine, it is described uniformly to eat dishes without rice or wine for license to honeycomb logical
Wireless signal is transmitted on the main band of letter and the supplement frequency band for keeping for unauthorized communication；
The launch point it is described uniformly eat dishes without rice or wine it is upper execute wireless transmission, wherein the wireless transmission in the dominant frequency band part and
Traffic flow is transmitted on the supplement band portion；And
Transmission rate of the traffic flow respectively in the dominant frequency band part and the supplement band portion is dynamically changed, is made
The overall quality of service qos requirement for obtaining the upper traffic flow of uniformly eating dishes without rice or wine is satisfied；
Wherein, the hair for dynamically changing the traffic flow respectively in the dominant frequency band part and the supplement band portion
Transmission rate, comprising:
When the effective transmission speed on the supplement frequency band drops below lower threshold, distribution or request are distributed additionally
Scheduling resource in the main band.
10. described to dynamically change the traffic flow respectively in the main band according to the method described in claim 9, wherein
Transmission rate on part and the supplement band portion, so that overall quality of service qos requirement is satisfied, further includes:
Transmission rate of the traffic flow respectively in the dominant frequency band part and the supplement band portion is dynamically changed, is made
It obtains accumulation transmission rate of the traffic flow in the main band and the supplement frequency band and is kept above minimum threshold.
11. according to the method described in claim 9, wherein, promoting the launch point to dynamically change the traffic flow and existing respectively
Transmission rate in the dominant frequency band part and the supplement band portion, comprising:
When the effective transmission speed on the supplement frequency band is more than higher thresholds, distribution or request distribute the less master
Scheduling resource on frequency band.
12. described to dynamically change the traffic flow respectively in the main band according to the method described in claim 9, wherein
Part and the transmission rate supplemented on band portion include:
Change first transmission rate of the traffic flow in the main band；And
Change second transmission rate of the traffic flow on the supplement frequency band, wherein the knots modification of second transmission rate
It is inversely proportional with the knots modification of first transmission rate.
13. described to dynamically change the traffic flow respectively in the main band according to the method described in claim 9, wherein
Part and the transmission rate supplemented on band portion include:
When meeting switching standards, dynamically the part traffic flow is switched from the main band to the supplement frequency band, or
Vice versa by person.
14. according to the method for claim 13, wherein when the competitive level in the unauthorized resource of the supplement frequency band is super
When crossing higher thresholds or being lower than lower threshold, meet the switching standards, wherein the competitive level includes wireless access technology
It is competed in competition and RAT between RAT.
15. according to the method for claim 13, wherein when the availability for dispatching resource in the main band is more than higher threshold
When being worth or being lower than lower threshold, meet the switching standards.
16. described to dynamically change the traffic flow respectively in the main band according to the method described in claim 9, wherein
Transmission rate on part and the supplement band portion, further includes:
When meeting switching standards, dynamically change the supplement frequency band, the main band used in the wireless transmission or
The shared amount of frequency spectrum of the two.
17. according to the method for claim 16, wherein when the competitive level in the unauthorized resource of the supplement frequency band is super
When crossing higher thresholds or being lower than lower threshold, meet the switching standards, wherein the competitive level includes wireless access technology
It is competed in competition and RAT between RAT.
18. according to the method for claim 16, wherein when the availability for dispatching resource in the main band is more than higher threshold
When being worth or being lower than lower threshold, meet the switching standards.
19. according to the method for claim 16, wherein the switching standards include from the received software definition of controller without
Line electricity SDR Signaling instructions.
20. according to the method described in claim 9, wherein, the launch point includes user equipment (UE) or base station BS.
21. a kind of launch point, comprising:
Processor；With
Non-transitorycomputer readable storage medium, stores the program that is executed by the processor, described program include to
Realize the instruction according to the movement in any one of claim 9 to 20 the method.
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| CN201910905940.8A CN110649998B (en) | 2014-05-16 | 2015-05-18 | System and method for dynamically allocating resources on licensed and unlicensed spectrum |
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| US14/670,215 | 2015-03-26 | ||
| PCT/CN2015/079204 WO2015172748A2 (en) | 2014-05-16 | 2015-05-18 | System and method for dynamic resource allocation over licensed and unlicensed spectrums |
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